First of all, welcome to this forum!
Second of all, you're deck list is missing a kill, which could be the reason why you're having trouble finishing with this deck, but it's probably a slip-up.
Third of all, this thread needs more content. You need to tell us against which decks you're having trouble against (not just slaver), what kind of testing you've done, why you weren't able to finish games etc. If you don't add more content a moderator will probably move this to the 'Improvement' board (which isn't necessarily bad) or close this.
Fourth, I would read this thread.Last point I will make is that you probably (like the above thread says) should be running Tinker + Darksteel Colossus + Tendrils of Agony, instead of Psychatog. Tinker > DC can be a quicker kill, can be cast early and is less easy to remove. Tendrils is a backup kill that can't be countered. I know this makes it more of a Gifts deck instead of a Tog deck, but unfortunately Tinker > DC is just that stupidly good. Other then that I'd probably try to fit in a Rebuild, which is a amazing Scroll target.